Emul

Emul (エムル, Emuru) is a vorpal rabbit also the guide for the unique quest that Sunraku encounters, titled “Invitation from Rabituza”, and a main NPC character. Emul is a great ally with powerful magic, like the ability to teleport other characters.

Appearance
In her Rabbit form she appears as a white rabbit with floppy ears in a stage magician's outfit(complete with a top hat) that's kinda a cross between that and the white rabbit from Alice and Wonderland. Like the Disney version of the white rabbit she has a pocket watch that she seems to check every so often. Later in the story she showcases that she can temporarily become human where she looks like a young girl wearing a similar outfit and has white hair.

Trivia

 * Emul's first appearance in the anime is similar to the white rabbit from Alice in Wonderland with her first appearing and Sunraku giving chase in order to start the unique scenario